It is a first come first serve at the public campgrounds but this time of year, you could easily get a spot. You can find out all the info about the sites at the following link - http://raystown.nab.usace.army.mil/C...oints_camp.htm
You then need to head over to the following link to place the reservation or take your chances on the 1st come 1st serve spots. - http://www.recreation.gov/camping/Se...ex=CampingSpot
If you have problems, please feel free to give Matt or Ed a call 888-Raystown for more info!